American Journal of Orthodontics and Dentofacial Orthopedics最新文献

{"title":"Evaluating Dental Monitoring effectiveness compared with conventional monitoring of clear aligner therapy using the Peer Assessment Rating index","authors":"","doi":"10.1016/j.ajodo.2024.05.014","DOIUrl":"10.1016/j.ajodo.2024.05.014","url":null,"abstract":"<div><h3>Introduction</h3><div>This study aimed to evaluate the effectiveness of Dental Monitoring (DM) (Dental Monitoring SAS, Paris, France) compared with conventional monitoring (CM) during active orthodontic treatment.</div></div><div><h3>Methods</h3><div>The Peer Assessment Rating (PAR) index was used to evaluate the pretreatment and posttreatment records of 51 patients, with 26 in the CM group and 25 in the DM group. The change in weighted PAR was analyzed to assess the effectiveness of treatment.</div></div><div><h3>Results</h3><div>The chi-square test revealed that the CM group had a higher percentage of patients in the great improvement category compared with the DM group. However, this difference was not statistically significant (<em>P</em> = 0.192). A repeated measures general linear model demonstrated significant improvement over time (<em>P</em> &lt;0.001), with no statistically significant group differences noted between CM and DM (<em>P</em> = 0.181) and no statistically significant time-by-group interaction (<em>P</em> = 0.299).</div></div><div><h3>Conclusions</h3><div>Both CM and DM showed significant improvements in weighted PAR scores, but no statistically significant difference is present between the 2 groups.</div></div>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141460593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A qualitative study of preoperative anxiety in orthognathic patients: The patient perspective.","authors":"Xiu Ling Florence Kok, Fiona S Ryan, Jamie Gwilliam, Mark Sayers, Susan J Cunningham","doi":"10.1016/j.ajodo.2024.08.007","DOIUrl":"https://doi.org/10.1016/j.ajodo.2024.08.007","url":null,"abstract":"<p><strong>Introduction: </strong>Increased preoperative anxiety may have an adverse impact on the patient experience. This qualitative study therefore aimed to explore those factors affecting anxiety in the approach to orthognathic surgery.</p><p><strong>Methods: </strong>A total of 28 orthognathic patients who had completed their presurgical orthodontic treatment and were within 8 weeks before their surgery underwent one-to-one in-depth interviews. The interviews explored their experience in the preoperative period, with the focus on aspects relating to anxiety. Interviews were audio-recorded and transcribed verbatim, and data were then analyzed using a thematic framework approach.</p><p><strong>Results: </strong>Eight themes and associated subthemes were identified. The first theme related to time and described the approach to the surgery and the transience of the side effects. The second theme discussed control and how the need for control may affect anxiety; the third focused on fear related to the surgery and the element of \"the unknown.\" The fourth theme highlighted the importance of trust between patients and clinicians, whilst the fifth focused on information and its delivery, which was crucial for managing uncertainty. The sixth theme centered on expectations about the surgery and the patient's ability to cope, and the seventh discussed coping strategies that were effective in alleviating anxiety. The final theme focused on the benefits of a strong, effective support system in reducing anxiety. No distinct typologies emerged from the data. Recommendations for consideration by clinicians are presented.</p><p><strong>Conclusions: </strong>The findings provide a novel insight into the multifactorial nature of preoperative anxiety in orthognathic patients and also highlight the important role of the clinical team in creating a supportive environment to help reduce patient anxiety.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142331833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In-silico evaluation of orthodontic miniscrew-assisted rapid palatal expanders for patients with various stages of skeletal maturation.","authors":"Abdelhak Ouldyerou,Egon Mamboleo,Lauren Gilchrist,Khaled Alsharif,Peter Ngan,Ali Merdji,Osama Mukdadi","doi":"10.1016/j.ajodo.2024.07.018","DOIUrl":"https://doi.org/10.1016/j.ajodo.2024.07.018","url":null,"abstract":"INTRODUCTIONThis study aimed to use a finite element method to assess the stress on the miniscrews, skeletal and dental changes resulting from maxillary expansion using either a tooth-bone-borne (TBB) or a bone-borne (BB) device on patients with various skeletal maturation.METHODSTwo types of expanders were modeled using SolidWorks. The design of the 2 expanders was similar, with the exception that the BB appliance lacked support for teeth (rods and bands). Both were placed on the palatal bones with the help of 4 miniscrews as bony anchorage. Five skeletal maturation stages were examined using suture maturation classification by Angelieri. A lateral displacement of 0.2 mm was applied to simulate 1 turn of jackscrew per day. The dental and skeletal changes from the treatment were quantified.RESULTSStage A sutural maturation exhibited the greatest skeletal movement (0.13 mm/d) with a V-shaped displacement pattern. Stages B and C exhibited a more parallel expansion pattern. Stages D and E exhibited the least amount of skeletal movement with either device. Compared with the BB device, TBB demonstrated greater dental displacement. On average, the BB device exhibited a skeletal-to-dental expansion ratio of 70% from stage A to C compared with 49% with the TBB device.CONCLUSIONSBB device showed more skeletal displacement than TBB, and the latter showed more dental side effects, particularly during stages B and C. The miniscrew-assisted rapid palatal expansion appliance was effective with sutural maturation stages A to C using the classification by Angelieri with a more parallel separation of the midpalatal sutures in stages B and C.","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":null,"pages":null},"PeriodicalIF":3.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of midpalatal suture maturation stage in 5- to 20-year-olds using cone-beam computed tomography.","authors":"Pan Yang, Mengyao Zhu, Yiman Guo, Chengjun Su, Yajie Wang, Yuxing Bai, Ning Zhang","doi":"10.1016/j.ajodo.2024.07.019","DOIUrl":"https://doi.org/10.1016/j.ajodo.2024.07.019","url":null,"abstract":"<p><strong>Introduction: </strong>This study aimed to evaluate the midpalatal suture (MPS) maturation stages using the cone-beam computed tomography classification method in Chinese children aged 5-10 years, adolescents aged 11-15 years, and postadolescents aged 16-20 years and identify a correlation between maturation stage and age and sex.</p><p><strong>Methods: </strong>Axial sections of tomographic images from 717 participants (369 female and 348 male participants) aged 5-20 years were used to classify the maturation stage of the MPS (stages A, B, C, D, and E). Kappa statistics were used to evaluate the measurement error. The chi-square test was applied to analyze the differences in the distribution of MPS stages by age group and by sex among all participants, as well as the adolescent group. The Fisher exact test was employed to assess the differences in MPS stage distribution by sex among children aged 5-10 years and among the postadolescent group. The Mann-Whitney U test was used to assess the potential variance in age distribution between stages C and D.</p><p><strong>Results: </strong>The most prevalent maturation stage was stage C (40.3%). Of the total population, 69.4% had MPS in stages A, B, or C. A significant difference in age distribution was observed between stage C and stage D (P <0.001). The distribution of the MPS maturation stage significantly varied by age group (P <0.001) and sex (P <0.001).</p><p><strong>Conclusions: </strong>The distribution of participants in advanced maturation stages increases with age. Female patients generally experience earlier MPS maturation than male patients, particularly between the ages of 11-20 years.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142300002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Donald \"Skip\" Ferguson (1945-2024): A Legacy of Kindness, Mentorship, and Adventure!","authors":"Nikhillesh Vaiid, Dauro Olivera, Pramod Sinha","doi":"10.1016/j.ajodo.2024.08.003","DOIUrl":"https://doi.org/10.1016/j.ajodo.2024.08.003","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142146789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of 1- and 3-piece directly 3-dimensional printed indirect bonding trays: An in vitro study.","authors":"Merve Nur Eglenen, Gülden Karabiber","doi":"10.1016/j.ajodo.2024.07.015","DOIUrl":"https://doi.org/10.1016/j.ajodo.2024.07.015","url":null,"abstract":"<p><strong>Introduction: </strong>This study aimed to compare the transfer accuracy of indirect bonding trays of different thicknesses and numbers of pieces.</p><p><strong>Methods: </strong>Digital indirect bonding was performed on 56 printed resin models, divided into 4 groups with 14 models in each: 1-mm 1-piece tray (OPT), 2-mm OPT, 1-mm 3-piece tray (TPT), and 2-mm TPT. The trays were designed using Appliance Designer (3Shape A/S, Copenhagen, Denmark). Angular (torque, tip, or angulation) and linear (mesiodistal, buccolingual, occlusogingival, or vertical) differences were compared by using open-source GOM Inspect software (GOM GmbH, Braunschweig, Germany).</p><p><strong>Results: </strong>In the buccolingual direction, the 1-mm TPT (0.180 ± 0.041 mm) was significantly more accurate than the 1-mm OPT (0.240 ± 0.032 mm). In the vertical direction, significant differences were seen between the 1-mm and 2-mm OPTs (1-mm OPT: 0.220 ± 0.043 mm; 2-mm OPT: 0.428 ± 0.143 mm; P = 0.003) and between the 1-mm and 2-mm TPTs (1-mm TPT: 0.210 ± 0.072 mm; 2-mm TPT: 0.340 ± 0.062 mm; P = 0.004) in the total region. In the tip angle, significant differences were seen between the 1-mm and 2-mm OPTs and between the 1-mm OPT and TPT. In the torque angle, a significant difference was seen between the 1-mm TPT (2.815°±0.350°)and 2-mmTPT (2.368° ± 0.245°; P = 0.017).</p><p><strong>Conclusions: </strong>Both the thickness and the splitting of the trays impacted the bracket bonding accuracy. The 1-mm trays were more accurate than the 2-mm trays. Despite a few statistically significant differences between the 1-mm OPT and TPT, the 1-mm OPT was recommended for clinical use, considering the designing and placing of the trays.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142127240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of pulpal blood flow during orthodontic space closure: Prospective clinical trial.","authors":"Aljaž Golež, Maja Ovsenik, Ksenija Cankar","doi":"10.1016/j.ajodo.2024.07.017","DOIUrl":"https://doi.org/10.1016/j.ajodo.2024.07.017","url":null,"abstract":"<p><strong>Introduction: </strong>Orthodontic tooth movement (OTM) is a biological process that can affect the vascularization of the dental pulp. The forces exerted on the teeth may increase periapical pressure that could compress the arterioles, which in turn affects pulpal blood flow (PBF). The study aimed to investigate how OTM affects PBF during orthodontic space closure.</p><p><strong>Methods: </strong>A total of 22 adolescent participants who required orthodontic space closure in mandibular posterior sectors were enrolled in a prospective clinical study. The same sliding mechanics, wires, and active elements were used. Patients were observed before OTM, after leveling before space closure, and at the 4th, 7th, 21st, and 28th during active space closure. PBF was measured with laser Doppler (LD) flowmetry. Dental models were obtained with an intraoral scanner.</p><p><strong>Results: </strong>The LD flow values decreased significantly during the observation period (2-way repeated measures analysis of variance, P <0.001). There was a significant difference in LD flow between tooth categories (2-way repeated measures analysis of variance, P <0.001). During space closure, the most pronounced LD flow reduction was observed in single-rooted teeth closest to the residual space. A higher speed of OTM was associated with a greater decrease in LD flow on day 4 of OTM (Pearson correlation, P = 0.0299).</p><p><strong>Conclusions: </strong>Orthodontic space closure reduced PBF; it was lowest in the early stages of space closure and showed a tendency to increase during the first month. Anterior teeth closer to the interdental space that experiences more OTM and teeth that move faster during initial OTM had a higher risk of reduced blood flow.</p>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142127241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mandibular cortical bone remodeling characteristics in patients with extraction: A cone-beam computed tomography study","authors":"","doi":"10.1016/j.ajodo.2024.04.012","DOIUrl":"10.1016/j.ajodo.2024.04.012","url":null,"abstract":"<div><h3>Introduction</h3><p><span>This study evaluated the labial and lingual cortical bone remodeling characteristics of </span>mandibular central incisors after retraction, which remain controversial among orthodontists.</p></div><div><h3>Methods</h3><p><span><span>Cortical bone remodeling and central incisor movement of 33 patients (aged 23.64 ± 4.30 years) who underwent </span>mandibular first premolar<span> extraction and incisor retraction at the crestal (S1), midroot (S2), and apical (S3) levels were analyzed using superimposed cone-beam computed tomography images on the basis of voxel-based registration of the mandibular stable region. Multivariate linear regression<span> was used to explore the relationships between labial bone remodeling/tooth movement (BT) ratios and factors such as the ANB angle, mandibular plane angle (Mp-SN), and incisor movement patterns. The patients were divided into 4 groups according to the lingual cortical bone remodeling condition and the relationship between posttreatment incisor roots and the original lingual cortical bone border. At the 3 levels (S1, S2, and S3), the classifications of cortical bone remodeling of the mandibular incisors were calculated; </span></span></span><em>t</em> tests were used to compare the amount of labial and lingual bone remodeling, BT ratios, and lingual bone remodeling/root over the original border (BRo) ratios.</p></div><div><h3>Results</h3><p><span>The mean labial BT ratios at all 3 levels were close to 1. Multivariate linear regression indicated that the tooth movement pattern negatively correlated with the BT ratio at the S2 and S3 levels (</span><em>P</em><span> &lt;0.05). Lingual bone apposition occurs when the root penetrates the original lingual cortical bone border in most patients. BRo ratios can more accurately reflect the inherent remodeling ability of the lingual cortical bone than BT ratios. The mean lingual BRo ratios were (1) S1 level: mandibular left central incisor (T31), 0.87 ± 0.25 and mandibular right incisor (T41), 0.86 ± 0.25; (2) S2 level: T31, 0.81 ± 0.12 and T41, 0.80 ± 0.22; and (3) S3 level: T31, 0.76 ± 0.20 and T41, 0.83 ± 0.26. There was no significant difference between labial BT ratios and lingual BRo ratios at the S2 and S3 levels.</span></p></div><div><h3>Conclusions</h3><p>The amount of labial cortical bone resorption caused by mandibular incisor retraction showed varied relationships with the amount of tooth movement. Bodily retraction may decrease the labial BT ratios at the S2 and S3 levels. Active lingual cortical bone apposition occurred when the roots penetrated the original lingual border and exhibited strong remodeling ability.</p></div>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141433176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Qualitative and quantitative evaluation of enamel surface roughness and remineralization after interproximal reduction: An in vivo study","authors":"","doi":"10.1016/j.ajodo.2024.05.009","DOIUrl":"10.1016/j.ajodo.2024.05.009","url":null,"abstract":"<div><h3>Introduction</h3><p>Interproximal reduction (IPR) damages the caries protective superficial layer of the enamel, making the enamel surface prone to caries because of the increase in surface roughness. Remineralizing solutions can help in preventing these undesirable side effects. Therefore, this study aimed to compare the effect of nanohydroxyapatite (nHAp) and sodium fluoride (NaF) application on enamel remineralization after IPR and to evaluate changes in surface roughness, composition, and microhardness of the treated enamel.</p></div><div><h3>Methods</h3><p>A total of 25 patients with Angle’s Class I malocclusion<span>, requiring 4 premolar<span> extractions, were selected and randomly divided into 5 groups (n = 5). Group 1 served as the control. In group 2, the extraction of premolars was done immediately after IPR, and in group 3, the extraction of premolars was done 3 months after IPR. In group 4, the extraction of premolars was performed 3 months after IPR with weekly application of nHAp serum. In group 5, the extraction of premolars was performed 3 months after IPR, along with once-a-month application of NaF varnish<span>. The proximal reduction of premolars in all the groups was done using Strauss IPR burs (Strauss Diamond Instruments, Palm Coast, Fla). The extracted teeth were sectioned, and the enamel surfaces were subjected to energy-dispersive x-ray spectroscopy to evaluate elemental composition. Vicker’s microhardness test was used to evaluate enamel hardness and atomic force microscopy for enamel surface roughness. Descriptive statistics were calculated for the 5 groups using a 1-way analysis of variance, and Tukey’s multiple post-hoc test was used for intergroup comparison.</span></span></span></p></div><div><h3>Results</h3><p>Calcium-to-phosphorous ratio, enamel microhardness, and surface roughness were found to be closest to untouched enamel in patients treated with nHAp, followed by patients who were treated with NaF. A lower calcium-to-phosphorous ratio and weakened and roughest enamel surface was seen in teeth, which were extracted immediately after IPR.</p></div><div><h3>Conclusions</h3><p>Among the remineralizing agents tested, nHAp serum can be recommended for better remineralization of enamel surfaces after IPR.</p></div>","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141293898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"September 2024","authors":"","doi":"10.1016/j.ajodo.2024.07.006","DOIUrl":"10.1016/j.ajodo.2024.07.006","url":null,"abstract":"","PeriodicalId":50806,"journal":{"name":"American Journal of Orthodontics and Dentofacial Orthopedics","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142173225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}